The process in which cells that are products of meiosis acquire the specialized features of ascospores. Ascospores are generally found in clusters of four or eight spores within a single mother cell, the ascus, and are characteristic of the ascomycete fungi (phylum Ascomycota).

The mitotic cell cycle transition by which a cell in G1 commits to S phase. The process begins with the build up of G1 cyclin-dependent kinase (G1 CDK), resulting in the activation of transcription of G1 cyclins. The process ends with the positive feedback of the G1 cyclins on the G1 CDK which commits the cell to S phase, in which DNA replication is initiated.

The process of assembly of a ring composed of actin, myosin, and associated proteins that will function in cytokinesis.

The assembly and arrangement of a septum that spans the plasma membrane interface between progeny cells following cytokinesis. The progeny cells that form a division septum are not able to exchange intracellular material.

The aggregation, arrangement and bonding together of septins and associated proteins to form an organized structure resembling a ring at the cell cortex.

The cell cycle transition where a cell leaves M phase and enters a new G1 phase. M phase is the part of the mitotic cell cycle during which mitosis and cytokinesis take place.

Control of the formation, spatial distribution, and breakdown of a septin ring located at the bud neck.

The endoplasmic reticulum organization process that results in the structure of the endoplasmic reticulum being oriented in the cell.

A process in which a protein is transported to, or maintained at, a location within a cellular bud neck.

The specialized cell wall of the ascospore (spore), which is the product of meiotic division. Examples of this component are found in Fungi.

The prospore membrane is a double-membraned structure that extends from the cytoplasmic face of the spindle pole bodies to encompass the spindle pole bodies and the four nuclear lobes that are formed during meiosis. It helps isolate the meiotic nuclei from the cytoplasm during spore formation and serves as a foundation for the formation of the spore walls. An example of this component is found in Schizosaccharomyces pombe.

The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

Any microtubule that is part of a mitotic or meiotic spindle; anchored at one spindle pole.

A protein complex containing septins. Typically, these complexes contain multiple septins and are oligomeric.

A protein complex containing septins. Typically, these complexes contain multiple septins and are oligomeric.

A spindle that forms as part of meiosis. Several proteins, such as budding yeast Spo21p, fission yeast Spo2 and Spo13, and C. elegans mei-1, localize specifically to the meiotic spindle and are absent from the mitotic spindle.

A ring-shaped structure that forms at the site of cytokinesis in the bud neck of a budding cell; composed of members of the conserved family of filament forming proteins called septins as well as septin-associated proteins. In S. cerevisiae, this structure forms at the time of bud emergence and the septins show a high rate of exchange.

The prospore membrane is a double-membraned structure that extends from the cytoplasmic face of the spindle pole bodies to encompass the spindle pole bodies and the four nuclear lobes that are formed during meiosis. It helps isolate the meiotic nuclei from the cytoplasm during spore formation and serves as a foundation for the formation of the spore walls. An example of this component is found in Schizosaccharomyces pombe.

The constriction between the mother cell and daughter cell (bud) in an organism that reproduces by budding.

The constriction between the mother cell and daughter cell (bud) in an organism that reproduces by budding.

The apex of the mating projection in unicellular fungi exposed to mating pheromone; site of polarized growth.